83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
#define ABRT_MASK 0x7f
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/*An 'expected' exception is one that would be expected to occur on every execution
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of this code path; eg a GPF due to being in v86 mode. An 'unexpected' exception is
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one that would be unlikely to occur on the next exception, eg a page fault may be
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fixed up by the exception handler and the next execution would not hit it.
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This distinction is used by the dynarec; a block that hits an 'expected' exception
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would be compiled, a block that hits an 'unexpected' exception would be rejected so
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that we don't end up with an unnecessarily short block*/
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#define ABRT_EXPECTED 0x80
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extern uint8_t opcode, opcode2;
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extern uint8_t flags_p;
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extern uint8_t znptable8[256];
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extern uint16_t zero, oldcs;
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extern uint16_t lastcs, lastpc;
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extern uint16_t *mod1add[2][8];
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extern uint16_t znptable16[65536];
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extern int x86_was_reset, trap;
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extern int codegen_flat_ss, codegen_flat_ds;
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extern int timetolive, keyboardtimer, trap;
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extern int optype, stack32;
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extern int oldcpl, cgate32, cpl_override;
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extern int nmi_enable;
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extern int oddeven, inttype;
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extern uint32_t use32;
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extern uint32_t rmdat, easeg;
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extern uint32_t oxpc, flags_zn;
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extern uint32_t abrt_error;
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extern uint32_t backupregs[16];
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extern uint32_t *mod1seg[8];
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extern uint32_t *eal_r, *eal_w;
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#define fetchdat rmdat
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#define setznp168 setznp16
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#define getr8(r) ((r&4)?cpu_state.regs[r&3].b.h:cpu_state.regs[r&3].b.l)
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#define getr16(r) cpu_state.regs[r].w
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#define getr32(r) cpu_state.regs[r].l
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#define setr8(r,v) if (r&4) cpu_state.regs[r&3].b.h=v; \
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else cpu_state.regs[r&3].b.l=v;
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#define setr16(r,v) cpu_state.regs[r].w=v
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#define setr32(r,v) cpu_state.regs[r].l=v
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#define fetchea() { \
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rmdat = readmemb(cs + pc); \
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pc++; \
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reg = (rmdat >> 3) & 7; \
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mod = (rmdat >> 6) & 3; \
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rm = rmdat & 7; \
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if (mod!=3) \
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fetcheal(); \
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}
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#define JMP 1
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#define CALL 2
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#define IRET 3
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#define OPTYPE_INT 4
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enum
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{
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ABRT_NONE = 0,
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ABRT_GEN,
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ABRT_TS = 0xA,
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ABRT_NP = 0xB,
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ABRT_SS = 0xC,
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ABRT_GPF = 0xD,
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ABRT_PF = 0xE
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};
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extern void x86_doabrt(int x86_abrt);
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extern void x86illegal();
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extern void x86seg_reset();
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extern void x86gpf(char *s, uint16_t error);
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extern void x86gpf_expected(char *s, uint16_t error);
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